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alexanderatiencia
01.02.2020 •
Mathematics
Suppose the vector describing the location of a car moving in a straight line is given by d=< 15t, -36t> , where the distance is in miles and the time 't' is in hours. to the nearest minute, how long will it take for the car to move 24 miles?
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Ответ:
except if you use the starting point of (0,0), its essentially an application of pythagorean theorem
x2 would be 15*t
y2 would be -36*t
and d would be 24
writing it all out would be
24^2= (15t)^2 + (-36t)^2
in which case, just expand, and solve for t
any questions?
Ответ:
36 more gallons
Step-by-step explanation:
90 x .4
36